Microstructure and abrasive wear characteristics of in situ vanadium carbide particulate-reinforced iron matrix composites

被引:52
|
作者
Zhong, Lisheng [1 ,2 ]
Ye, Fangxia [2 ]
Xu, Yunhua [2 ]
Li, Jinshan [1 ]
机构
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710068, Peoples R China
[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
关键词
Composites; Casting; Wear; HIGH-SPEED STEEL; SURFACE COMPOSITES; VOLUME FRACTION; FABRICATION; RESISTANCE; COATINGS; BEHAVIOR;
D O I
10.1016/j.matdes.2013.08.097
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this work, in situ synthesis with infiltration casting and subsequent heat treatment was applied to fabricate vanadium carbide (V8C7) particulate-reinforced iron matrix composites. The microstructure and wear-resistance of V8C7 particulate-reinforced iron matrix composites with different volume fraction were studied using scanning electron microscopy, X-ray diffraction, and wear testing. The V8C7 particles were uniformly distributed in the matrix, and the size of the V8C7 reinforcement was 2-12 mu m. The relative wear resistance of the composites initially increases decreases with higher V8C7 volume fractions. The best wear resistance of the composites was 21.2 times higher than that of gray cast iron under a 20 N load. This was achieved at 24% V8C7 volume fraction. Wear of the composites manifests as grooves, broken carbide particles, and re-embedment of wear debris. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:564 / 569
页数:6
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